Mac Pro mid 2012 got wet and now has low peformance and battery problems

yesterdays night i had accidentally spilled a glass of iced tea all over my mac pro. it didnt turn off nor anything so i shut it off and cleaned it i opened it and tried to get all i could clean and dry. but today i took it to college it didnt turn off when i got home i put it to charge but the light of the charger was green all time so i tried to turn it on and eventually it did but the battery icon appeared with an X in it now it doesnt work without getting it plugged.

My second problem is i usually played games like League of Legends and Dota in full video specs and played with a 40 fps rate, but today also fps were down to 10 so i noticed in videos and everything that my mic video capacity had lowered i would sincerely like to know if there is any home fix or else i gotta take it somehwere to get fixe

Its a MacBook Pro 13 inch mid 2012

2.9GHz intel core i7

8GB 1600 MHz DDR3 ram

Inte HD graphics 4000 1536MB graphic